Sometimes, when you create an mksysb, you receive an error like this one:
/dev/ipldevice not foundDevice /dev/ipldevice is a hard link to the disk your system booted from. Mksysb tries to determine the size of the boot logical volume with the bosboot -qad /dev/ipldevice command. Via lslv -m hd5 you can see from which disk was booted (or via bootlist -m normal -o).
To resolve this problem: re-create the hard link yourself:
# ln /dev/bootdevice /dev/ipldeviceFor example:
ln /dev/rhdisk0 /dev/ipldeviceNote: Use "rhdisk" and not "hdisk".
Another way to solve this problem: reboot your system and the /dev/ipldevice will be created automatically for you (Your users may prefer the first solution...).